| // Copyright 2014 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| import 'package:flutter_test/flutter_test.dart'; |
| import 'package:flutter/widgets.dart'; |
| |
| void main() { |
| testWidgets('Text widget parameter takes precedence over DefaultTextHeightBehavior', (WidgetTester tester) async { |
| const TextHeightBehavior behavior1 = TextHeightBehavior( |
| applyHeightToLastDescent: false, |
| applyHeightToFirstAscent: false, |
| ); |
| const TextHeightBehavior behavior2 = TextHeightBehavior( |
| applyHeightToLastDescent: true, |
| applyHeightToFirstAscent: false, |
| ); |
| |
| await tester.pumpWidget( |
| const DefaultTextHeightBehavior( |
| textHeightBehavior: behavior2, |
| child: Text( |
| 'Hello', |
| textDirection: TextDirection.ltr, |
| textHeightBehavior: behavior1, |
| ), |
| ), |
| ); |
| |
| final RichText text = tester.firstWidget(find.byType(RichText)); |
| expect(text, isNotNull); |
| expect(text.textHeightBehavior, behavior1); |
| }); |
| |
| testWidgets('DefaultTextStyle.textHeightBehavior takes precedence over DefaultTextHeightBehavior ', (WidgetTester tester) async { |
| const TextHeightBehavior behavior1 = TextHeightBehavior( |
| applyHeightToLastDescent: false, |
| applyHeightToFirstAscent: false, |
| ); |
| const TextHeightBehavior behavior2 = TextHeightBehavior( |
| applyHeightToLastDescent: true, |
| applyHeightToFirstAscent: false, |
| ); |
| |
| await tester.pumpWidget( |
| const DefaultTextStyle( |
| style: TextStyle(), |
| textHeightBehavior: behavior1, |
| child: DefaultTextHeightBehavior( |
| textHeightBehavior: behavior2, |
| child: Text( |
| 'Hello', |
| textDirection: TextDirection.ltr, |
| ), |
| ), |
| ), |
| ); |
| |
| RichText text = tester.firstWidget(find.byType(RichText)); |
| expect(text, isNotNull); |
| expect(text.textHeightBehavior, behavior1); |
| |
| await tester.pumpWidget( |
| const DefaultTextHeightBehavior( |
| textHeightBehavior: behavior2, |
| child: DefaultTextStyle( |
| style: TextStyle(), |
| textHeightBehavior: behavior1, |
| child: Text( |
| 'Hello', |
| textDirection: TextDirection.ltr, |
| ), |
| ), |
| ), |
| ); |
| |
| text = tester.firstWidget(find.byType(RichText)); |
| expect(text, isNotNull); |
| expect(text.textHeightBehavior, behavior1); |
| }); |
| |
| testWidgets('DefaultTextHeightBehavior changes propagate to Text', (WidgetTester tester) async { |
| const Text textWidget = Text('Hello', textDirection: TextDirection.ltr); |
| const TextHeightBehavior behavior1 = TextHeightBehavior( |
| applyHeightToLastDescent: false, |
| applyHeightToFirstAscent: false, |
| ); |
| const TextHeightBehavior behavior2 = TextHeightBehavior( |
| applyHeightToLastDescent: false, |
| applyHeightToFirstAscent: false, |
| ); |
| |
| await tester.pumpWidget(const DefaultTextHeightBehavior( |
| textHeightBehavior: behavior1, |
| child: textWidget, |
| )); |
| |
| RichText text = tester.firstWidget(find.byType(RichText)); |
| expect(text, isNotNull); |
| expect(text.textHeightBehavior, behavior1); |
| |
| await tester.pumpWidget(const DefaultTextHeightBehavior( |
| textHeightBehavior: behavior2, |
| child: textWidget, |
| )); |
| |
| text = tester.firstWidget(find.byType(RichText)); |
| expect(text, isNotNull); |
| expect(text.textHeightBehavior, behavior2); |
| }); |
| |
| testWidgets('DefaultTextHeightBehavior.of(context) returns null if no ' |
| 'DefaultTextHeightBehavior widget in tree', (WidgetTester tester) async { |
| const Text textWidget = Text('Hello', textDirection: TextDirection.ltr); |
| TextHeightBehavior? textHeightBehavior; |
| |
| await tester.pumpWidget(Builder( |
| builder: (BuildContext context) { |
| textHeightBehavior = DefaultTextHeightBehavior.of(context); |
| return textWidget; |
| }, |
| )); |
| |
| expect(textHeightBehavior, isNull); |
| final RichText text = tester.firstWidget(find.byType(RichText)); |
| expect(text, isNotNull); |
| expect(text.textHeightBehavior, isNull); |
| }); |
| } |